Lockable cock for gas-meters.



E. A. C. SCHOOF. LOCKABLE COCK FOB GAS METERS. APPLICATION 11.21) MAY4, 1914.

WITNESSES NYE/V708 Wa c I fi l 6380/3007? Patented Sept. 22, 1914.

To allcuhom .itwiai concern i i 1 :Be a knownaatl, ERNST A. 0. San, avcitizenoi'ithe 'UnitedStates, and a resident of :the city of New York, borough of -theBron'x, county ofBronx, and State ,of New Yorlnhave inventeda new and Improved Lockable. Cock for Gas-Meters, of whichfthe following is a full, clear, and exactdescriptionl j I .This invention 'relatesto lockable cocks adaptedespecially for use in connection with gas-meters,although it is not'lim'ited to this application-.-

k The inventionxhasifor its general objects tO lIHPIOVB andlsimplify the construction and operation of lockable cocks of the char-.

acter referred to so as to be reliable and eliicient in use, comparatively inexpensive to manufacture,apractically tamper-proof and yet easily manipulated and controlled features of construction and arrangement of parts which will be set forth with particuclaims appended hereto.

laritv in the following description and ,In' the accompanying drawing, which illustrates one embodiment of the 'inven tion, and wherein similar characters of reference indicate corresponding parts in all the views, Figure 1 is a side viewof the. lockable gas cook; Fig.2 is a vertical section thereof,xshowing the lock-controlling key entered in the locking means; Fig. 3 is a plan view of the cock, showing the same when the valve is open for the flow of gas or other fluid; Fig. 1 is a bottom plan view of the locking element or screw; Fig. 5 is a bottom plan view of the cock when in locked position; and 6 is a perspective view of the key. Referring to. the drawing, 1 designates the casing of the cock, which has a finished bore 2 in which the plug or valve 3 rotatably and snugly fits, the'valve having oppositely disposed ports 4 which are adapted to aline f oonannnooon EORGAS-METEIRS. i

I I s ecificat on of ma ma, Application filedfMay' J5, 1914. ser iain .s3s,1sa I i ct of invention HPATENT FFICE...

iimisr A. c. scnoonfor NEW YORK, N. Y. l I V T i Patented with the oppositely extendingnipplesz'i on the valve casingftowhich pipe connections areima-dev The lower end of. the valve has a threaded stud6 on which are-nuts? for tightly seating the valve, and on the oppositeiend of the valve isfa'head 8 having a non-c1rcular:portion 9 to which a wrench or other operating means maybe applied for openingandjclosing the cock by rotating the valve or plugl'3q; The parts of the cock th -is far described are of standard construction and the Blocking means is "added to the casing and valve respectively without. changing: theustandardw design of the same. "Thecasing. 1 has a lateral projection 10 which is provided with a chamber 11,and the bottom of this" chamber is provided with an opening 1210f any desired configuration to receive the key 13. In thehtop of the chamber 11. is a threaded opening 14: in

which-engages a screw 15, thehead 1.6 of

which is disposed within the chamber 11 and has sockets or equivalent means 17 to receive the lugs 18 on the bit 19 of the key 13. The disposition and shapes of the sockets and lugs may be varied as desired to render tampering with the locking means lmpossible.

On the valve element of the cock there is formed integral with the head 8 an arm 20 which, is formed with a socket 21 open at its under side and provided with a thread 22 with whichthe upper end of the screw 15 is adapted to engage. On the screw is an annular flange formed in any suitableman- 1 ner, as, for instance, by a ring or collar 23 secured by a pin 24 which passes through'the ring and screw. This is adapted to jam against the under side of the arm 20 as the screw or locking element is screwed home, as shown in Fig. 1. This screw locking elementis operated by the key13 and is used only when the cock is closed, to cut off the supply of gas or other fluid. Normally the arm is thrown around at right angles from the position shown in Fig. 2 to that shown in Fig.3, and the screw is retracted downwardly so as to clear the under side of thearm 20. When the cock is to be locked the valve element thereof is thrown around through ninety degrees to. bring the socket 21 in alinement with the locking screw 15. The

screwis then turned by means of the key 13 i vthe advantages of the construction and method-of operati0n"will ,be readily under- 2; scope of the appended claims.

stood:.bythose skilled in the art to which the. invention appertains, and while I have described the device which-I now consider to be the best embodimentthereof, I desire to .have it: understood that the device shown ismerely illustrative and that such changes may be made when desired as are within the Havingv thus described my invention,

I claim as new and. desireto secure byLet 1 1 name to this specification ln the presence of two SHbSCI'lblIlgWIHIQSSGSJ ters Patent: v g 1. A, cock of the class: described c'ompris '.ing a casing'yfa valve "velementdrotatably .mounted. therein and having a portion ex-v tending. out of the. casinggan arm on the, saidwextending portion and :having a threaded opening, a chamber formed on the side j the screw for engagementj with a key,said screw being disposed 1 on it sy-axis parallel with the valve. I s i j i 2. A cock of' the class. described" compris *ing a casing, a valve therein, alaterallyrextending arm on the. valve and exposed out- "of the casing,a screw fi- 7,; j bar a d dapted to extendjout-of;th sam sidethe casing, saidarmhavingasthreaded opening, a chamber ontheside'of the casing and having anopeningin-"alinement with the opening 1n thearm, a 'screw threadedin the chamber and extending out of the opening thereof andhaving it'sfl'outer end ar- '-rangedto screw into the openingofthe arm, 7

a collar on the SCI'GW ELIld adaptedtojam against the arm, and a headontheflscrew and arranged withinthe caslng and having means'for engagement withthe key.

In testimony whereof l have signed" Witnesses: v v THOMAS F. Loonnaivn, ART UR E HI QXL Copies of this patent may be obta ined for five cents each, by addressing the Commissioner of latents, WashirigtomD'fiG. V 

